/Engine/Plugins/Runtime/RigVM/Source/RigVM/Public/RigVMCore/RigVMDecorator.h
Allows the decorator to react when added to a node
virtual void OnDecoratorAdded ( [URigVMController](API\Plugins\RigVMDeveloper\RigVMModel\URigVMController) * InController, [URigVMNode](API\Plugins\RigVMDeveloper\RigVMModel\URigVMNode) * InNode )